... is controlled by PLC. There are functions such as auto press, auto stop while paper jam, powder jet, steps running forward ... rollers.8. NP device: printing, number printing, red chromatography, stamp press printing, perforation line, these function can be finished one time ... .(5 heads on a ring × 8 rings on a shaft)Letter press printing deviceCylinder type: 90 × 345mm Max.Mounting ring type: 30 ...